Ben Eater's Homebuilt Computer
Posted: Sat Nov 19, 2022 7:50 pmBuild an 8-bit computer from scratch
A fellow named Ben Eater did a remarkable job of building (and documenting) an 8-bit computer from scratch using simple logic gates and integrated circuits. You can find his full documentation here:
https://eater.net/8bit
Here's an interview with Ben related to his work at the Khan Academy :
https://www.youtube.com/watch?v=MAtQe5zpNsw
Here are links to the videos from Ben's site about his home built computer:
Introduction and Background Material
Clock
Registers
ALU
RAM
Program Counter
Output register
Bringing it all together
CPU control logic
These videos are available through these links and on the following pages.
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A fellow named Ben Eater did a remarkable job of building (and documenting) an 8-bit computer from scratch using simple logic gates and integrated circuits. You can find his full documentation here:
https://eater.net/8bit
Here's an interview with Ben related to his work at the Khan Academy :
https://www.youtube.com/watch?v=MAtQe5zpNsw
Here are links to the videos from Ben's site about his home built computer:
Introduction and Background Material
Post YouTube - Overview and Plans
Post YouTube - Programming and Architecture
Post YouTube - Single Stepping through a Program
Post YouTube - Programming C to Assembly to Machine
Post YouTube - Fibonacci Program Example
Post YouTube - How Semiconductors Work
Post YouTube - How Transistors Work
Post YouTube - Transistors as Logic Gates
Post YouTube - Logic Gates and Flip Flops for Memory
Post YouTube - Turning an SR Latch into a D Latch
Post YouTube - Edge Triggering to get a D Flip-Flop
Post YouTube - Programming and Architecture
Post YouTube - Single Stepping through a Program
Post YouTube - Programming C to Assembly to Machine
Post YouTube - Fibonacci Program Example
Post YouTube - How Semiconductors Work
Post YouTube - How Transistors Work
Post YouTube - Transistors as Logic Gates
Post YouTube - Logic Gates and Flip Flops for Memory
Post YouTube - Turning an SR Latch into a D Latch
Post YouTube - Edge Triggering to get a D Flip-Flop
Clock
Post YouTube - Clock 555 Timer in Astable Mode
Post YouTube - Clock 555 Timer in Monostable Mode
Post YouTube - Clocking, Single-Stepping, Debouncing
Post YouTube - Completed Clock Module
Post YouTube - Clock 555 Timer in Monostable Mode
Post YouTube - Clocking, Single-Stepping, Debouncing
Post YouTube - Completed Clock Module
Registers
Post YouTube - Registers using Tri-State Buffers
Post YouTube - Description of 74LS245 Tri-State Buffer
Post YouTube - Simple 1-Bit Register
Post YouTube - Use of 74LS173 Registers to Store/Display
Post YouTube - Registers A, B, and Inst. Interface via Bus
Post YouTube - Description of 74LS245 Tri-State Buffer
Post YouTube - Simple 1-Bit Register
Post YouTube - Use of 74LS173 Registers to Store/Display
Post YouTube - Registers A, B, and Inst. Interface via Bus
ALU
Post YouTube - Using Logic Gates to Add 4-bit Numbers
Post YouTube - Negative Numbers and 2's Complement
Post YouTube - Description of Arithmetic Logic Unit (ALU)
Post YouTube - Building the Arithmetic Logic Unit (ALU)
Post YouTube - Diagnosing Problems in the ALU
Post YouTube - Operation of the ALU to add and subtract
Post YouTube - Negative Numbers and 2's Complement
Post YouTube - Description of Arithmetic Logic Unit (ALU)
Post YouTube - Building the Arithmetic Logic Unit (ALU)
Post YouTube - Diagnosing Problems in the ALU
Post YouTube - Operation of the ALU to add and subtract
RAM
Post YouTube - Random Access Memory (RAM) Design
Post YouTube - Construction of the RAM Module
Post YouTube - Addressing RAM Manually and with Control Logic
Post YouTube - Completed RAM Module with Address, Data, Control
Post YouTube - Testing the RAM Module
Post YouTube - Construction of the RAM Module
Post YouTube - Addressing RAM Manually and with Control Logic
Post YouTube - Completed RAM Module with Address, Data, Control
Post YouTube - Testing the RAM Module
Program Counter
Post YouTube - Description of a J-K Flip-Flop
Post YouTube - Exploring race conditions in the J-K Flip-Flop
Post YouTube - Master-Slave J-K Flip-Flop to eliminate racing
Post YouTube - Exploring the 74LS76 J-K Flip-Flop for Counting
Post YouTube - Program Counter Design with the 74LS161
Post YouTube - Building the Program Counter
Post YouTube - Exploring race conditions in the J-K Flip-Flop
Post YouTube - Master-Slave J-K Flip-Flop to eliminate racing
Post YouTube - Exploring the 74LS76 J-K Flip-Flop for Counting
Post YouTube - Program Counter Design with the 74LS161
Post YouTube - Building the Program Counter
Output register
Post YouTube - Using Logic Gates to Build 7-Segment Displays
Post YouTube - Using an EEPROM to Build 7-Segment Displays
Post YouTube - Building an EEPROM Programmer using an Arduino
Post YouTube - Building the Computer Display Module
Post YouTube - Using an EEPROM to Build 7-Segment Displays
Post YouTube - Building an EEPROM Programmer using an Arduino
Post YouTube - Building the Computer Display Module
Bringing it all together
Post YouTube - Building and Connecting Modules via the Bus
Post YouTube - Connecting Control Signals to all Modules
Post YouTube - Connecting Control Signals to all Modules
CPU control logic
Post YouTube - Initial Design of the Control Logic
Post YouTube - Microcoding the Control Logic
Post YouTube - Using an EEPROM for Microcoding (LDA,ADD,OUT,HLT)
Post YouTube - Reset Button, Power Supply, and Hardware Review
Post YouTube - Expanding the Instruction Set for Subtraction
Post YouTube - Expanding the Instruction Set with STA, LDI, JMP
Post YouTube - Computing Everything? Turing Complete and Branching
Post YouTube - Adding Hardware to support Jumps on Zero and Carry
Post YouTube - Updating the Microcode for JZ and JC instructions used in multiply program
Post YouTube - Microcoding the Control Logic
Post YouTube - Using an EEPROM for Microcoding (LDA,ADD,OUT,HLT)
Post YouTube - Reset Button, Power Supply, and Hardware Review
Post YouTube - Expanding the Instruction Set for Subtraction
Post YouTube - Expanding the Instruction Set with STA, LDI, JMP
Post YouTube - Computing Everything? Turing Complete and Branching
Post YouTube - Adding Hardware to support Jumps on Zero and Carry
Post YouTube - Updating the Microcode for JZ and JC instructions used in multiply program
These videos are available through these links and on the following pages.